fix invalid cache for range exceeds bound

[shiyuhang0]

What problem does this PR solve?

Issue Number: close #issue_number

Problem Description: TBD

What is changed and how does it work?

Code changes

• Has exported function/method change
• Has exported variable/fields change
• Has methods of interface change
• Has persistent data change
• No code

Check List for Tests

This PR has been tested by at least one of the following methods:

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Possible performance regression, WHY: TBD
• Increased code complexity, WHY: TBD
• Breaking backward compatibility, WHY: TBD
• NO side effects

Related changes

• Need to cherry-pick to the release branch
• Need to update the documentation
• Need to be included in the release note
• NO related changes

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 6 lines in your changes are missing coverage. Please review.

Project coverage is 37.91%. Comparing base (533dbc2) to head (e9af8ce).

Files	Patch %	Lines
...java/org/tikv/common/region/RegionStoreClient.java	0.00%	6 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #780      +/-   ##
============================================
- Coverage     38.26%   37.91%   -0.35%     
+ Complexity     1630     1616      -14     
============================================
  Files           278      278              
  Lines         17521    17527       +6     
  Branches       1995     1996       +1     
============================================
- Hits           6705     6646      -59     
- Misses        10148    10222      +74     
+ Partials        668      659       -9     

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